<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0" />
        <title>6. 运算符</title>
    </head>
    <body>
        <script>
            // 1. 算术运算符
            // 2. 比较运算符 >、<  = == ===
            // 3. 自增、自减
            // 4. 逻辑运算  &&、||、！
        </script>
    </body>
</html>